J/MNRAS/347/837ivo://CDS.VizieR/J/MNRAS/347/837doi:10.26093/cds/vizier.73470837CDSDe Breuck C.Hunstead R.W.Sadler E.M.Rocca-Volmerange B.Klamer I.2024-06-29T20:14:43Z2004-05-24T16:20:31ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frradio-sourcesradio-continuum-emissioninfrared-photometryactive-galactic-nucleiredshiftedA sample of 76 ultra-steep spectrum (USS) radio sources is defined from the 843-MHz Sydney University Molonglo Sky Survey (SUMSS) and 1.4-GHz NRAO VLA Sky Survey (NVSS) radio surveys with spectral index {alpha}<-1.3 and S(1.4GHz)>15mJy; 71 of these sources without bright optical or near-infrared counterparts at 1.385GHz were observed with the Australia Telescope Compact Array (ATCA), providing 5arcsec resolution images and subarcsec positional accuracy. To identify their host galaxies, near-infrared K-band images were obtained with IRIS2 at the AAT and SofI at the NTT; 92% of the USS sources could be identified down to K~20.5. 142 FITS files containing the radio maps and the K-band images are included in the fits subdirectory.2004MNRAS.347..837Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/347/837CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/70 : Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/347/837https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/347/837http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/347/837https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/347/837https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/347/837http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/347/837GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/347/837/table1 (The SUMSS-NVSS ultra-steep spectrum (USS) sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/347/837/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/347/837/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/347/837/table1?GETtext/xml+votable180.050000true3.414-32.412750.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/MNRAS/347/8375/11635 6/16417 16419 16427 16450-16451 16454-16455 16458 16460 16513 35318 35321 35324 35519 35641 35651 35654 35658 35713 35717 35892 46459 46463 46535 46545 46552-46554 46556 46558 46560 46562 46564-46566 46571 46574 46576 46584 46586 46831 47559 47571 47574-47575 482605.585776613014535e-25 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/347/837?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/347/837/table1The SUMSS-NVSS ultra-steep spectrum (USS) sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNVSSName of the source (from J2000 position)meta.id;meta.maincharS843Integrated 843MHz flux densitymJyphot.flux.density;em.radio.750-1500MHzinte_S843Error in 843MHz flux densitymJystat.errorintS1400Integrated 1400MHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloate_S1400Error in 1400 MHz flux densitymJystat.errorfloatSp+IndexSpectral index 843-1400MHzspect.index;em.radio.750-1500MHzfloate_Sp+IndexError in spectral index 843-1400MHzstat.errorfloatl_LAS[<] Limit flag on LASmeta.code.errorcharLAS? Radio largest angular size from ATCA maps.arcsecphys.angSize;em.radio;stat.maxfloatnullablePA? Radio position angle North through Eastdegpos.posAngintnullableTelTelescope used for K-band image (1)meta.id;instr.telcharK(2)? K magnitude in 2" diameter aperturemagphot.mag;em.IR.Kfloatnullablee_K(2)? Error in K(2) magnitudemagstat.errorfloatnullablel_K(4)[<>] Limit flag on K(4) magnitudemeta.code.errorcharK(4)? K magnitude in 4" diameter aperturemagphot.mag;em.IR.Kfloatnullablee_K(4)? Error in K(4) magnitudemagstat.errorfloatnullablel_K(8)[<>] Limit flag on K(8) magnitudemeta.code.errorcharK(8)? K magnitude in 8" diameter aperturemagphot.mag;em.IR.Kfloatnullablee_K(8)? Error in K(8) magnitudemagstat.errorfloatnullableRAJ2000Radio Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Radio Declination (J2000.0)pos.eq.dec;meta.mainrPos[NA] Position origin code (2)meta.codecharRAK? K-band Right ascension (J2000.0)pos.eq.ranullableDEK? K-band Declination (J2000.0)nullablez? 2dF spectroscopic redshiftsrc.redshiftfloatnullableNoteDisplay the note associated to this sourcemeta.ref.urlcharJ/MNRAS/347/837/table2Integration times of radio and near-IR observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNVSSName of the source (from J2000 position)meta.refcharATCA? Integration time of ATCA (radio) observation (1)stime.expointnullableRadLink to FITS radio imagemeta.ref.urlcharAAT? Integration time of AAT (K-band) observation (2)stime.expointnullableNTT? Integration time of NTT (K-band) observation (2)stime.expointnullableKbandLink to FITS near-IR imagemeta.ref.urlchar